MLX71121_15 Datasheet, PDF (23/29 Pages) Melexis Microelectronic Systems – FSK/OOK Receiver

MLX71121
300 to 930MHz
FSK/OOK Receiver
4.4 AC System Characteristics
all parameters under normal operating conditions, unless otherwise stated;
typical values at T_A= 23 °C and V_CC = 3 V, all parameters based on test circuits as shown Fig. 11
Parameter
Symbol
Condition
Min Typ Max
Receive Characteristics
Input Sensitivity 1)
315MHz
FSK
433MHz
868MHz
915MHz
315MHz
OOK
433MHz
868MHz
915MHz
Maximum input signal – FSK
Maximum input signal – OOK
Spurious emission
Image rejection 1^st IF
Image rejection 2^nd IF
LNA Parameters
Voltage gain
P_min1
P_min2
P_min3
P_min4
P_min5
P_min6
P_min7
P_min8
P_{max, FSK}
P_{max, OOK}
P_spur
IR₁
IR₂
MODSEL
1
RFSEL
0
1
0
0
1
MODSEL=1
MODSEL=0, M>70dB
w/o SAW filter
G_LNA
depends on external
LC tank
-107
-107
-104
-102
-112
-112
-108
-105
-10
-10
-54
20
25
18
IF Filter Parameters
Center frequency
3dB bandwidth
40dB bandwidth
IF Amplifier / RSSI
Operating frequency
RSSI usable range
RSSI slope
FSK Demodulator
Input frequency range
Carrier acceptance range
f_cent
B_3dB
B_40dB
f_IFA
DR_RSSI
S_RSSI
continuous range
f_DEM
∆f_DEM
1.8
300
1.4
0.4
11
45
55
20
1.8
±80
Demodulator sensitivity
S_DEM
5
1)
at 4kbps NRZ, BER  310^-3, peak detector data slicer, LNASEL = 0 or 1
Unit
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
MHz
kHz
MHz
MHz
dB
mV/dB
MHz
kHz
mV/
kHz
39010 71121
Rev. 012
Page 23 of 29
Data Sheet
Mar/15